In several posts on X, Musk claimed without evidence that diversity, equity and inclusion initiatives put airline customers in danger.

Tech billionaire Elon Musk drew a swift rebuke from two of the nation’s best known civil rights organizations Wednesday, after he criticized efforts by United Airlines and Boeing to hire nonwhite pilots and factory workers.

The criticism came after Musk claimed in a series of posts on X that efforts to diversify workforces at those companies have made air travel less safe. He offered no evidence for the claim, and one of his replies directed attention to a post by someone else speculating about the IQ of Black airline employees.

Marc Morial, president and CEO of the National Urban League, said Musk’s statements were “abhorrent and pathetic.” He noted that Tesla, where Musk is CEO, is being sued by the Equal Employment Opportunity Commission for alleged abuse of Black employees, including claims of racial slurs and nooses found in the workplace.

“Musk’s company not only refused to investigate complaints or take any steps to end the abuse, it viciously retaliated against employees who complained or opposed the abuse,” Morial said in a statement to NBC News, citing allegations from the suit.